CVE-2023-5393
📋 TL;DR
This vulnerability allows remote attackers to cause a stack overflow by sending a malformed message to a Honeywell server, potentially leading to remote code execution. It affects Honeywell products with vulnerable versions that process hostname disconnections. Organizations using affected Honeywell industrial control systems are at risk.
💻 Affected Systems
- Honeywell industrial control systems (specific products not detailed in CVE)
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Remote unauthenticated attacker gains full control of the system, potentially compromising industrial processes or exfiltrating sensitive data.
Likely Case
Denial of service through server crashes or instability, with potential for limited code execution in some configurations.
If Mitigated
Minimal impact with proper network segmentation, updated systems, and monitoring in place.
🎯 Exploit Status
Exploitation requires sending malformed messages to trigger stack overflow. No public exploit code is known, but the vulnerability is remotely exploitable without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Most recent version (specific version not provided)
Vendor Advisory: https://process.honeywell.com
Restart Required: Yes
Instructions:
1. Check Honeywell Security Notification for specific affected products. 2. Download and install the most recent version from Honeywell. 3. Restart the system as required. 4. Verify the update was successful.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected systems from untrusted networks to prevent remote exploitation.
Input Validation
allImplement network filtering to block malformed messages if supported by network devices.
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure to trusted sources only.
- Monitor system logs for unusual disconnection events or crashes.
🔍 How to Verify
Check if Vulnerable:
Check system version against Honeywell's security notification and compare with most recent version.Check Version:
Varies by product - consult Honeywell documentation for version checking commands.Verify Fix Applied:
Confirm system is running the most recent version from Honeywell and no longer exhibits vulnerability symptoms.📡 Detection & Monitoring
Log Indicators:
- Unexpected server disconnections
- Stack overflow errors in system logs
- Abnormal process crashes
Network Indicators:
- Malformed network packets to port handling hostname disconnections
- Unusual traffic patterns to industrial control ports
SIEM Query:
source="honeywell_system" AND (event_type="crash" OR event_type="disconnect" OR message="*overflow*")